<template>
  <div>
    <el-upload
      class="avatar-uploader"
      action="#"
      :show-file-list="false"
      :on-success="handleAvatarSuccess"
      :before-upload="beforeAvatarUpload"
      :http-request="httpRequestFn"
    >
      <img v-if="imageUrl" :src="imageUrl" class="avatar">
      <i v-else class="el-icon-plus avatar-uploader-icon" />
      <el-progress v-if="showProgress" type="circle" :percentage="percent" class="progress" />
    </el-upload>
  </div>
</template>

<script>
// 导入 cos 模块
const COS = require('cos-js-sdk-v5')

// SECRETID 和 SECRETKEY请登录 https://console.cloud.tencent.com/cam/capi 进行查看和管理
var cos = new COS({
  SecretId: 'AKIDiFWWFhsmRpwrWu1sSlnY2GDtIQHrACyT',
  SecretKey: 'GFyQbV8UaPwDDwOZT7UcT3MO9dqmRouj'
})

export default {
  name: 'UploadImg',
  props: {
    imgUrl: {
      type: String,
      default: ''
    }
  },
  data() {
    return {
      imageUrl: '',
      percent: 0, // 图片的上传进度
      showProgress: false // 是够显示上传进度
    }
  },
  watch: {
    imgUrl() {
      this.imageUrl = this.imgUrl
    }
  },
  methods: {
    handleAvatarSuccess(res, file) {
      this.imageUrl = URL.createObjectURL(file.raw)
    },
    beforeAvatarUpload(file) {
      const isJPG = ['image/jpeg', 'image/png', 'image/jpg', 'image/gif'].includes(file.type)
      const isLt2M = file.size / 1024 / 1024 < 2

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG 格式!')
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 2MB!')
      }
      return isJPG && isLt2M
    },

    // 自定义上传头像
    httpRequestFn(res) {
      console.log(res)
      this.imageUrl = URL.createObjectURL(res.file)
      if (res.file) {
        // 显示进度条
        this.showProgress = true
        cos.putObject(
          {
            Bucket: 'jiejie-1309369777', // 存储桶的名称，必须
            Region: 'ap-beijing', // 存储桶所在地域，必须字段
            Key: res.file.name, // 文件名，必须
            StorageClass: 'STANDARD', // 上传模式, 标准模式
            Body: res.file, // 上传文件对象
            // 上传进度条
            onProgress: (progressData) => {
              // 控制进度条的进度
              this.percent = (progressData.percent * 100).toFixed(0)
            }
          },
          (err, data) => {
            if (err === null && data.statusCode === 200) {
              this.imageUrl = `https://${data.Location}`
              this.$emit('update:imgUrl', this.imageUrl)
              // 隐藏进度条
              this.showProgress = false
            }
          }
        )
      }
    }
  }
}
</script>

<style>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 160px;
  height: 160px;
  line-height: 178px;
  text-align: center;
}
.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
.progress {
  position: absolute;
  display: flex;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #e4e4e4;
  border-radius: 50%;
  opacity: 0.9;
}
</style>
